There's more languages native to unix-land than Bash, you know. Find me a linux distro that doesn't have GCC or Clang installed by default, or even Python for that matter.
Also, lots of Linux distributions don't come with GCC and Clang by default (Ubuntu, Debian, OpenSUSE).
Python is also the 2nd most popular scripting language in the Linux world; it's even part of the Freedesktop base runtime. Though I don't know if it's standard in BSDs.
Most distros don't preinstall C compilers.